zrx-id 0.0.20

Identifier abstractions and utilities
Documentation 
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// Copyright (c) 2025-2026 Zensical and contributors

// SPDX-License-Identifier: MIT
// All contributions are certified under the DCO

// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.

// ----------------------------------------------------------------------------

//! Operand conversions.

use crate::id::expression::Result;

use super::Operand;

// ----------------------------------------------------------------------------
// Traits
// ----------------------------------------------------------------------------

/// Attempt conversion into [`Operand`].
///
/// This trait is primarily provided for a more convenient API when building
/// expressions. It's used by the [`Expression`][] builder, in order to allow
/// for fallible operations within closures. Operands itself can't fail to be
/// created, but the constructs from which operands are created can.
///
/// [`Expression`]: crate::id::expression::Expression
pub trait TryIntoOperand {
    /// Attempts to convert into an operand.
    ///
    /// # Errors
    ///
    /// In case conversion fails, an error should be returned.
    fn try_into_operand(self) -> Result<Operand>;
}

// ----------------------------------------------------------------------------
// Blanket implementations
// ----------------------------------------------------------------------------

impl<T> TryIntoOperand for T
where
    T: Into<Operand>,
{
    /// Creates an operand from a value `T` and wraps it in a result.
    #[inline]
    fn try_into_operand(self) -> Result<Operand> {
        Ok(self.into())
    }
}

impl<T> TryIntoOperand for Result<T>
where
    T: Into<Operand>,
{
    /// Creates an operand from a value `T` in a result.
    #[inline]
    fn try_into_operand(self) -> Result<Operand> {
        self.map(Into::into)
    }
}